package com.wk.swordoffer.run;

import java.util.Stack;

public class StackSimulateQueue {
	Stack<Integer> stack1 = new Stack<Integer>();
    Stack<Integer> stack2 = new Stack<Integer>();
    
    public void push(int node) {
        stack1.push(node);
    }
    
    public int pop() {
    	if(stack2.isEmpty()){
	    	while(!stack1.isEmpty()){
	    		stack2.push(stack1.pop());
	    	}
    	}
		return stack2.pop();
    }
}
